Mathematics, 08.11.2019 06:31 Isactuallycarter99
Ascrap metal dealer claims that the mean of his cash scales is "no more than $80," but an internal revenue service agent believes the dealer is untruthful. observing a sample of 20 cash customers, the agent finds the mean purchases to be $91, with a standard deviation of $21. assuming the population is approximately normally distributed, and using the 0.05 level of significance, what is the calculated value of test statistic? (specify your answer to the 3rd decimal.)
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Ascrap metal dealer claims that the mean of his cash scales is "no more than $80," but an internal r...
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